... , brown or black solid, purple,in water, turns into acetylene and calcium hydroxide and releases hea calcium carbide Size:0-4mm,4-7mm ... /kg.Packing in 50/100/200/250kgs new steel drumWe can produce all sizes of calcium carbide as your requirement such as 50-80mm ... ,25-5omm,15-25mm,7-15mm,80-120mm etc. supply calcium carbide